Morris, Robert W. <br/><br/>
Observations on intertidal organism associations : part 1, general description and paleoecological implications / 
Robert W. Morris, Harold B. Rollins. 
 -- New York :   [s.n.],   1977 
 - 128 p.  il. -- 
 (Bulletin of the American Museum of Natural History  ;  159, 3).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Zoogeografía
<br/><br/><label>Universal Decimal Class. No.: </label>591.9